Scientific evidence suggests shrimp have nociceptors and respond to noxious stimuli in ways that warrant precautionary welfare consideration in farming and fishing.
Whether shrimp experience suffering in a morally significant way remains scientifically debated, but evidence for nociception and aversive learning is mounting. Given the enormous numbers involved - trillions of shrimp produced annually - even a small probability of sentience creates a significant welfare concern under a precautionary approach. Improved slaughter methods (electrical stunning), reduced density farming, and water quality management are practical improvements that reduce potential suffering at scale.